Press



Oct. 16, 1934.

R. T. ANDERSON 1,977,259

PRESS Filed Sept. 17, 1932 2 Sheets-Sheet l Eng l 1E O O O O O O O O 3nnentor (Ittornegs Oct. 16, 1934. R, ANDERSON 1 1,977,259

PRESS Filed Sept. 17, 1952 2 Sheets-Sheet 2 6O 55 55 o 65 O O (68 59 ZSnventor H 8g on so j v attorneys 2s w l- 1o :5

Patented Oct. 16, 1934 UNITED STATES FATE This invention pertains to presses and relates PRESS Raymond Tattle Anderson, Berea, Ohio, assignor to The V. D. Anderson Company, Cleveland, Ohio, a corporation of Ohio Application September 17, 1932, Serial No. 633,674

ll) Claims.

more particularly to means employed for removing solids, such as foots, from the exterior of the press whereby drainage of the expressed 5 liquid will more readily take place than if such solids are allowed to accumulate and impede the free flow of such liquid.

The means employed to remove the foots or solids is especially applicable to presses wherein the shell or barrel is made up from a series of bars arranged in circular series with outwardly extending openings between the bars throughout the series.

A press structure to which my invention is readily applied is such as is shown in U. S. Letters Patent No. 1,773,771, granted August 26th,

The mechanism forming the basis of my invention is illustrated in the annexed drawings,

wherein:

Fig. 1 is a side elevation of a press of the type above referred to equipped with the scraper or foots removing means and the operating mechanism therefor;

Fig. 2, a vertical sectional view taken on the line II-II of Fig. 1;

Fig. 3, a longitudinal sectional view of one of the combined air nozzles and scraper actuator or segment;

Fig. 4=, a perspective view of one of the scraper elements; and

press.

Said barrel is formed in halves and each half may be said to comprise a series of vertically disposed castings or rib-like members 6.

Inasmuch as the parts are alike to each side of the vertical center of the barrel corresponding parts on the opposite side will be given the same numerals with the exponent a applied thereto.

The ribs 6 stand in spaced relation (see Fig. 1) and the inner face of each is semi-circular in outline and a series of bars 7 bear thereagainst and form with the corresponding bars upon the other side, the shell or barrel of the press.

Suitable knife bars, as 8, are employed though insofar as the present invention is concerned the ar-v rangement of the bars and the manner in which they are supported may be changed or varied and the knife bars need not be present.

Itls

necessary, however, that the outer surface of the shell. or barrel be of general circular contour or present a semi-circular face to each side of a vertical line passing through the center of the shell.

Within the shell is a shaft 9 carrying a series of worms, as 10, one of which is shown. This ar rangement may also be varied.

Each half of the press composed of the ribs 6, or 6 as the case may be, together with its allied shell bars and associated parts forms in effect an integral unit which may be moved back and forth or separated from the other unit upon the horizontally disposed members 4 and 5. Each of the ribs 6 and 6 is provided at its upper and lower ends with projecting portions against which are drawn bars 11 and 12 and 11 and 12% respectively. These bars are held in their proper position With the twohalves of the press shell in closed relation (as shown in Fig. 2) by a series'of studs or bolts 13 and 14 which pass through the clamping bars 11 and 12 and 11 and 12% .The studs or bolts 13 and 14, as will be noted, stand in horizontal position as in thepatent above referred. to. I

Motion is imparted to the shaft 9, and consequently to the separated worms mounted thereon, from any suitable source of power. H

The press of course will be provided with a choke (not shown) which, acting in conjunction with the worms 10, produces a very heavy pressure within the shell, disrupting any oil cells in the material undergoing treatment and forcing the oil and any other liquid outwardly through the spaces formed between the shell or barrel bars 7. This is usual practice as referred to in' the above mentioned patent. However, it has been found, particularly where oil-bearing materials are being treated, that the foots which are forced outwardly between the bars tend to accumulate upon the outer surface of the press and in a measure choke up the openings and prevent the free outflow of oil therethrough. I

' Mounted upon the exterior of the shell of the press between each pair of ribs 6, or 6 as the case maybe, is a scraper element of the form best shown in Figs. 2, 4 and 5. It may be said to comprise two arcuate shaped elements 15 and 16 which are interconnected'by a plurality of ly to each side of the members 15 and 16 respectively.

The end plates 18 and 19, the inner face of the member 20, and the lugs 21, 21 are all curved so as to take a fair bearing against the outer faces of the shell bars '7 upon which the scraping member as a whole is imposed. The members 18 and 19, as will be best seen upon reference to Figs. 4 and 5, are beveled inwardly so as to produce relatively sharp edges which will cut into any extruded material and remove the same.

The cross bars 1'7 and the intermediate bar 20 at their outer portions are curved to simulate gear teeth so as to readily mesh with the rack teeth 23 formed upon the outer edge of a head 24 carried by an arm 25 keyed to a hollow shaft 26 (see Figs. 2 and 3). The arm 25 is provided with a channel 2'? which at its outer end is in communication with the pipe 26, the opposite end terminating in a channel or passage 28 formed in and extending through the head 24, each end of said passage being threaded and a nozzle, as 29, being mounted therein. These nozzles are provided with a laterally directedpassage extending toward the press shell.

To each of the heads 24 there is secured a pair of downwardly extending fingers or bars 30 and 31, the bars at their lower ends straddling the studs 14 (as best shown in Fig. 1) and serving, as the head is rocked by means presently to be described, to clear said studs of' foots or other material which may have accumulated thereon during the operation of the mechanism.

The pipe 26 is supported by suitable brackets 32 and 33 secured to a longitudinally extending bar 34 which is seated in recesses formed in the edges of the rib-like member 6 and bolted thereto. A similar pipe 26 is mounted upon the opposite side of the present structure.

Extending outwardly from the pipe 26 and rigidly affixed thereto is a rocker arm 35, the outer end of which is connected to a walking or rocking beam 36 through an adjustable link 3'7. The opposite end of the rocking beam is interconnected to the rocking arm or lever 35 through a similar adjustable link 37*. The rocking beam is fulcrumed, at 3-8, to a bracket 39 secured to certain of the press frame elements.

It is designed to operate the walking beam from a moving portion of the machine and in the present instance it takes its motion from a shaft associated with the press feeding mechanism. Such shaft is designated by 40 (Figs. 1 and 2), It has secured to it a crank arm 41 which at its outer end carries a crank pin 42. Interposed between said pin and one end of the walking beam 36 is a link 43 which, as the shaft 40 is rotated, and through the crank and pin, will impart a rocking motion to the beam 36 and consequently cause the arms 25 and 25 to swing up and down and carry the scraper members first in one direction and then in the other against the outer face of the barrel of the press. This movement will remove any accumulated material. It is preferable, however, to employ a jet of gaseous medium, such as air, in conjunction with said scraper means, or more specifically in conjunction with the rocker elements for said scrapers. To this end I- have devised a means whereby air is periodically and automatically fed to the pipes 26, 26 and outwardly through the jet nozzles 29, 29 thereby blowing air through the scrapers and onto the barrel thus keeping the scrapers clean and also assisting in removing material from the exterior of the barrel.

Connected to and extending upwardly from the hollow bracket member 33 is a branch pipe 45 and extending from the similar bracket 33* is a branch pipe 45 the pipes 45 and 15 being connected into a pipe 46. It will of course be understood that the pipes 26 and 26 are in di ect communication with the chambers in therespective brackets.

Air under pressure is introduced through a pipe 47, passing downwardly to pipe 46 but being normally prevented from entering the same through a spring closed valve 48. The stem of said valve is provided with a piston 49 working in a cylinder 50, the upper face of the cylinder being subject to air passing through a branch 51 from the pipe 47 when a valve 52 located in the branch 51 is openedand the valve 52 is normally closed by a spring and is periodically opened through the following means or its equivalent: The'stem 53 of the valve 52 stands in alignment with an adjustable contact element 54 carried by a bar 55 mounted for sliding movement in a pair of brackets 56 and 57. The bar carries an outwardly extending stud 58 which stands in line with a finger 59 mounted upon a disk or plate 60 secured to a shaft 61, said shaft at its other end having secured to it a gear 62 which meshes with a pinion 63 located above the same. Secured to thepinion shaft 64 is a ratchet wheel 65 with which cooperates an advancing pawl 66 pivotally mounted in an oscillating carrier 67, the center of oscillation being coincident with the shaft.

A weighted locking pawl 68 cooperates with the ratchet wheel 65't0 prevent retrograde movement thereof as the carrier 67 is swung clockwise and the pawl 66 rides over the teeth. To impart oscillating movement to the carrier 67 there is secured to the lower arm thereof a rod 69 upon which is mounted ablock 70. Said block is adjustable lengthwise of the rod and may be secured in its adjusted position by a locking screw 71. The block also has permanently attached to it a pitman '72 which at its other end carries an inverted U-shaped member '73, said member embracing the crank pin 42. It will thus be ap" preciated that as the pitman is oscillated the rod 69 will likewise be swung back and forth and through the rocker 6'7 and the pawl 66 motion will be imparted to gear 62 through pinion 63. This movement of the parts will periodically bring the finger 59 into contact with the stud 58 and inasmuch as the finger'is moving clockwise the bar 55 will be moved to the left and the valve 52 unseated, permitting air under pressure to enter the lateral 51 and force the piston 49 downwardly. Valve 48 is thereby opened and air passes through the connections heretofore mentioned to the pipes 26 and 26 and through the arms 25 and 25 and out through the nozzles 29 and 29.

Air will flow through the system so long as the finger 59 is incontact with the stud 53; When however its beveled end rides off of the stud the valve 52 will be closed by its spring and as a consequence valve 48 will likewise be closedby its spring, air passing out of the cylinder 56 through leakage around the piston.

By adjusting the block 70 toward the upper end of the rod 69 a greater amplitude of movement may be imparted to the rocker 6'? and consequently the finger 59 will be caused to contact the stud 58 more often or less frequently according as the block is moved upwardly or downwardly upon the rod 69. a

By adjustment'of the member 54 the length of time that the valves 52 and 48 are held open may be regulated and determined. If the member 54 is turned to the left, the member 59 is caused to contact the member 58 sooner than would otherwise be the case and push the rod further to the left, thus taking a longer time for the member 59 to ride oil of the stud 58.

It is thought from the foregoing that the operation of the structure will be understood but a' brief resume will be given, Assuming that the shell or barrel of the press is closed or in other words the parts are brought to the position shown in Fig. 2 and so secured upon rotation of the shaft and the compressing mechanism carried thereby oil or liquid will be forced outwardly through the openings between the bars. The foots or solid material in suspension in the oil or liquid will likewise be carried out and will tend to accumulate upon the exterior of the shell or barrel. At such time, however, shaft is rotating and, through the connections above described, the scrapers will be moved over the exterior surface of the press and remove the foots which would otherwise tend to collect there. At the same time the air jets come into operation periodically blowing the foots out of the spaces between the connecting ribs of the scraper. The foots, in falling down, have a tendency to collect between the transverse studs 14 and it is for this reason that the arms 30 and 31 are employed. They swing back and forth in the spaces between the studs and close to such studs as the heads 24 are swung through the rocking of the walking beam 86. In this manner the foots cannot build up or bridge between the studs and proper operation of the parts is insured. As above indicated, by adjusting the block '70 one way or another upon the rod 69 the time interval for the projection of air through the nozzles 29, 29 may be regulated as desired.

The press may be readily opened by loosening the studs 13, 14 and moving either one or both sections of the press away from the shaft, said sections being supported upon the fixed ways 4 and 5. It will be appreciated, of course, that when the press sections are to be moved the connections of the pipes and se must be broken or released, or instead each of them might be provided with a flexible section. 80, too, the links 37 and 37 must likewise be released.

While I have shown, in Fig. 1, scrapers substantially throughout the length of the press barrel, a greater or less number of scrapers may be employed according to the conditions which obtain with the treatment of different materials.

In patent above referred to, it will be noted cat the shell is composed of two separable sections mounted for lateral movement on ways, and inasmuch as the separation takes place upon a vertically disposed plane, the scrapers may be of such extent as to pass over the entire exterior surface of the shell or barrel when the sections are brought to closed position, and thus keep the whole shell free of any accumulation of foots or other solid material which may be extruded lat" orally between the elements which compose the shell.

What is claimed is: 1. In a press, the combination of a bed frame; of spaced horizontally disposed ways supd thereby; a shell composed of two separable ions mounted for lateral movement on said ways toward and from each other; a series of studs for securing said sections together in working relation; 2. scraper bearing against the outer face of each section; means for moving said. scrapers; and arms extending downwardly and associated with said last'named means, said arms passing inwardly between the studs and serving, as they are moved back and forth, to prevent accumulation of material thercbetween.

2.'In a press, the combination of a shell com posed of a plurality of bars arranged in circular series; a scraper mounted upon the outer face of said bars; an arm; connections between said and said scraper for moving the scraper; nozzles carried by the arm; means for rocking the arm and thereby actuating the scraper; and means for automatically and periodically supplying air under pressure to said nozzles.

3. In combination with a press having a series of spaced bars against which the material is forced, a scraper located exteriorly of said bars; means for moving said scraper; at least one nozzle associated with said means; an air line leading to said nozzle; means for automatically and periodically controlling the flow of air to and through said nozzle, said means including a valve in the line leading to the nozzle; means for normally closing said valve; a piston associated with the valve stem; a cylinder in which said piston works; a spring pressed valve located in a by-pass leading to the cylinder; a reciprocatory bar cooperating with the stem of the'last named valve and serving, when moved in one direction, to open the same; and means for periodically moving the bar to open said valve whereby air under pressure will be admitted to the cylinder and the first named valve will be opened through movement of the piston.

4. A structure as set forth in claim 3, wherein means is provided for varying the time interval of the opening of the valves.

5. In combination with a cylindrical press shell formed from spaced bars arranged in two oppositely disposed semi-circular series, said series being adapted to be moved laterally from the vertical toward and from each other to close and open the shell; a scraper mounted upon the outer face of each of said series; and means for moving such scrapers over substantially the entire outer face of the bars of each series when the sections are moved together, whereby any accumulated material which may be deposited on the exterior surface of the shell from the liquid'forced outwardly between the bars will be removed from the outer surface thereof and the shell kept free of accumulations.

6. A structure as set forth in claim 5, wherein the scrapers embody two side elements arcuate in outline, and intermediate cross bars connect said elements.

'7. In a press, the combination of a cylindrical shell having openings extending laterally therethrough for the passage of liquid which may be pressed from the material undergoing treatment; oppositely disposed scrapers bearing upon the exterior surface of said shell, each of said scrapers comprising two arcuate shaped elements, a series of cross bars connecting said elements, one of which at least contacts the shell, and end plates, one at each end of each of said scrapers and connected to the arcuate elements, the outer edges of the plates being beveled; and means for moving said scrapers over the exterior surface of the shell.

8. A structure as set forth in claim 7, wherein arcuate shaped racks engage the bars to move the scrapers and means is carried by each of said racks for projecting air upon the shell to assist in cleaning the scrapers and the shell.

9. In a press, the combination of a shell composed of a plurality of bars arranged in circular series; a scraper mounted upon the outer face of said shell; a hollow shaft located to one side of the shell; means for oscillating said shaft; an arm secured to the shaft for movement therewith; means interposed between said arm and the scraper for moving the latter over the shell as the shaft is oscillated, said arm having at least one passage extending therethrough and connected to the opening in the shaft; a nozzle carried 

